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détente [détente 词源字典]: détente: [20] English originally acquired this word from French in the 17th century as detent, which denotes a catch that regulates the movement of a clock. French détente, which originally signified a device for releasing a crossbow string, came from the past participle of Old French destendre ‘release’, a compound verb formed from the prefix des- ‘apart’ and tendre ‘stretch’ (related to English tension).

But English-speakers, mistakenly associating it with detain [15] (a verb of completely different origin, via Old French detenir from Latin dētinēre ‘keep back’) completely reversed its meaning, applying to a restraining catch rather than a releasing one. French, the language of diplomacy, re-lent détente to English in the first decade of the 20th century in the sense ‘relaxation of international tension’.
=> tension[détente etymology, détente origin, 英语词源]
analysis (n.): 1580s, "resolution of anything complex into simple elements" (opposite of synthesis), from Medieval Latin analysis (15c.), from Greek analysis "a breaking up, a loosening, releasing," noun of action from analyein "unloose, release, set free; to loose a ship from its moorings," in Aristotle, "to analyze," from ana "up, throughout" (see ana-) + lysis "a loosening," from lyein "to unfasten" (see lose). Psychological sense is from 1890. Phrase in the final (or last) analysis (1844), translates French en dernière analyse.
emission (n.): early 15c., "something sent forth," from Middle French émission (14c.) and directly from Latin emissionem (nominative emissio) "a sending out, a projecting, hurling, letting go, releasing," noun of action from past participle stem of emittere "send out" (see emit). Meaning "a giving off or emitting" is from 1610s.
-lysis: scientific/medical word-forming element meaning "loosening, dissolving, dissolution," from Greek lysis "a loosening, setting free, releasing, dissolution," from lyein "to unfasten, loose, loosen, untie" (see lose).
Lysander: masc. proper name, from Greek Lysandros, literally "releasing men," from comb. form of lyein "to release" (see lose) + -andros "man" (see anthropo-).
redemption (n.): mid-14c., "deliverance from sin," from Old French redemcion (12c.) and directly from Latin redemptionem (nominative redemptio) "a buying back, releasing, ransoming" (also "bribery"), noun of action from past participle stem of redimere "to redeem, buy back," from red- "back" (see re-) + emere "to take, buy, gain, procure" (see exempt). The -d- is from the Old Latin habit of using red- as the form of re- before vowels. In the Mercian hymns, Latin redemptionem is glossed by Old English alesnisse.
release (v.): c. 1300, "to withdraw, revoke (a decree, etc.), cancel, lift; remit," from Old French relaissier, relesser "to relinquish, quit, let go, leave behind, abandon, acquit," variant of relacher "release, relax," from Latin relaxare "loosen, stretch out" (see relax), source also of Spanish relajar, Italian relassare.

Meaning "alleviate, ease" is mid-14c., as is sense of "free from (duty, etc.); exonerate." From late 14c. as "grant remission, forgive; set free from imprisonment, military service, etc." Also "give up, relinquish, surrender." In law, c. 1400, "to grant a release of property." Of press reports, attested from 1904; of motion pictures, from 1912; of music recordings, from 1962. As a euphemism for "to dismiss, fire from a job" it is attested in American English since 1904. Related: Released; releasing.
release (n.): early 14c., "abatement of distress; means of deliverance," from Old French relais, reles (12c.), a back-formation from relesser, relaissier (see release (v.)). In law, mid-14c., "transferring of property or a right to another;" late 14c. as "release from an obligation; remission of a duty, tribute, etc." Meaning "act and manner of releasing" (a bow, etc.) is from 1871. Sense of "action of publication" is from 1907.
undo (v.): Old English undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position; to cancel, discharge, abrogate, reverse what has been done, put back in a former condition; bring to ruin, destroy," from un- (2) "opposite of" + do (v.). Related: Undone; undoing.